Comparison between the measured and the estimated 1-D heave of expansive soils for seven case studies results using a simple technique

S.K. Vanapalli, L. Lu, W.T. Oh

In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost Conference

Session: M3-B

ABSTRACT: Vanapalli et al. (2010) proposed a simple technique for estimating the 1-D heave in expansive soils. This technique requires only the information of plasticity index Ip, initial void ratio, e0, and variation of natural water content, Dw for the expansive soils in the active zone. In the present study, the validity of the proposed technique was tested using the data of 7 published case studies from various regions of the world. The results of the study show that there is a reasonably good comparison between the measured and the estimated 1-D heave for all the case studies.

RÉSUMÉ: Vanapalli et al. (2010) ont proposé une technique simple pour estimer le soulèvement unidimensionnel de sols expansifs. Cette technique ne requière que l'indice de plasticité, Ip, l' indice des vides initial, e0, et la variation de la teneur en eau naturelle, w, pour les sols expansifs dans la zone active. Dans la présente étude, la validité de la technique proposée a été mise à l'épreuve d'après les résultats publiés de 7 études de cas de diverses régions du monde. Les résultats de cette étude indiquent qu'il existe une concordance raisonnable entre les soulèvements unidimensionnels mesurés et estimés pour toutes les études de cas. 1 INTRODUCTION

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